Dwain Chambers

Since his blistering run of 9.91sec in the 100 metres semi-final at the UK Trials, James Dasaolu has become something of an invisible man in sprinting terms. After becoming only the fourth Briton to dip under that dream 10sec barrier, the hope – in fact, expectation – was that Dasaolu would back that up... and soon.

Dwain Chambers has called UK Athletics' bluff and won the right to compete at this weekend's Norwich Union World Indoor trials. The domestic governing body wanted to exclude the 29-year-old sprinter, who returned to athletics in 2006 after a two-year doping ban, because he had not been on their out-of-competition drug-testing register for a minimum of 12 months before his latest comeback following the collapse of his American Football career.

An emphatic victory in the Birmingham Games 60m has provided Dwain Chambers with the qualifying time he needs to contest next weekend's World Indoor trials. It has also provided UK Athletics, which is determined that he should not be allowed back into the international running until he has been regularly drug-tested for a year, with an increasingly intractable problem.

Dwain Chambers is considering legal action to force his way back into the reckoning for the British team this season following last week's statement from the chief executive of UK Athletics, Niels de Vos, that the sprinter should not be allowed to return to the sport until he had completed a 12-month period of random out-of-competition testing.

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